This is probably beyond the scope of the OP's question, but has anybody found a way to replace the battery icon? I'd like something with a percentage in the icon, but haven't found a way to actually replace it. I've tried Metamorph, but it didn't work.
Beautiful Widgets, in the Market, has a number of different battery icons you can download and use in their "Home" theme. Their "home" theme is a 1x4 widget for date/time/weather and battery. There are a multitude of different themes you can download...free.